A method for treating waste water from papermaking tobacco sheet production

A technology for producing waste water and tobacco flakes, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. To deal with problems such as long process flow, to achieve the effect of reducing processing load, saving land resources, and reducing process flow

Inactive Publication Date: 2011-12-14
HUBEI CHINA TOBACCO IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing wastewater treatment technology, the traditional activated sludge method is generally used, and the residence time of the wastewater in the aeration tank is 6-8 hours. However, the paper-making tobacco sheet enterprise will produce 50-120 tons per ton of sheet production. For organic wastewater, when a large amount of wastewater is treated according to the activated sludge method, due to the shortening of the wastewater residence time, there will be abnormal phenomenon of sludge swelling, which will affect the quality of wastewater treatment
Therefore, in order to adapt to the treatment of a large amount of wastewater, a large amoun...

Method used

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  • A method for treating waste water from papermaking tobacco sheet production
  • A method for treating waste water from papermaking tobacco sheet production
  • A method for treating waste water from papermaking tobacco sheet production

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Effect test

Embodiment 1

[0021] Process the waste water produced by papermaking tobacco flakes with the technical solution of the present invention, the influent water quality index is as shown in the table below, and it comprises the following steps:

[0022] (1) Pass the production waste water through the coarse filter of the grid, and cut off the suspended matter and floating matter with large particle size, and then flow into the waste water regulating tank by gravity;

[0023] (2) Lift the waste water in the waste water adjustment tank to the coagulator through the lifting pump, add Ca-diatomite composite coagulant to react for 5 minutes, then add polyferric sulfate and polyacrylamide separating agent into the static reaction tank Reaction, the reaction time is 50 minutes; after the reaction, low-concentration organic wastewater can be obtained; through this step, high-concentration wastewater with a COD (mg / l) of about 10,000 can be directly denatured into ordinary wastewater with a COD (mg / l) co...

Embodiment 2

[0032] Process the waste water produced by papermaking tobacco flakes with the technical solution of the present invention, the influent water quality index is as shown in the table below, and it comprises the following steps:

[0033] (1) Pass the production waste water through the coarse filter of the grid, and cut off the suspended matter and floating matter with large particle size, and then flow into the waste water regulating tank by gravity;

[0034] (2) Lift the waste water in the waste water adjustment tank to the coagulator through the lifting pump, add Ca-diatomite composite coagulant to react for 5 minutes, then add polyferric sulfate and polyacrylamide separating agent into the static reaction tank Reaction, the reaction time is 50 minutes; after the reaction, low-concentration organic wastewater can be obtained; through this step, high-concentration wastewater with a COD (mg / l) of about 10,000 can be directly denatured into ordinary wastewater with a COD (mg / l) co...

Embodiment 3

[0042] Process the waste water produced by papermaking tobacco flakes with the technical solution of the present invention, the influent water quality index is as shown in the table below, and it comprises the following steps:

[0043] (1) Pass the production waste water through the coarse filter of the grid, and cut off the suspended matter and floating matter with large particle size, and then flow into the waste water regulating tank by gravity;

[0044] (2) Lift the waste water in the waste water adjustment tank to the coagulator through the lifting pump, add Ca-diatomite composite coagulant to react for 5 minutes, then add polyferric sulfate and polyacrylamide separating agent into the static reaction tank Reaction, the reaction time is 50 minutes; after the reaction, low-concentration organic wastewater can be obtained; through this step, high-concentration wastewater with a COD (mg / l) of about 10,000 can be directly denatured into ordinary wastewater with a COD (mg / l) co...

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Abstract

The invention relates to a wastewater treatment method, in particular to a treatment method of papermaking method tobacco sheet production wastewater. The method comprises the following steps: (1) the production wastewater passes through a grid to perform coarse filtration and flows in a wastewater adjusting tank; (2) the wastewater in the wastewater adjusting tank is lifted to a coagulation device by a lift pump, a Ca-diatomite series composite coagulant is added in the coagulation device to react for 5-10 minutes, then polymeric ferric sulfate and polyacrylamide separating agents are added,the mixture enters a static reaction tank to react for 50-60 minutes; (3) the pH value of the low-concentration organic wastewater is adjusted to be less than 7, then the wastewater is pumped in a ultrasonic micro-electrolysis reactor, the chemical oxygen demand substances in the wastewater are fast digested under the combined action of ultrasonic wave and microelectrodes, the reaction time is 30-60 minutes; and (4) then the wastewater is adsorbed with activated carbon and filtered with quartz sand. The method has the advantages of short treatment time and good treatment effect and has wide applicability.

Description

technical field [0001] The invention relates to a method for treating waste water, in particular to a method for treating waste water produced by papermaking tobacco flakes. Background technique [0002] Paper-making tobacco flakes is a high-tech technology for the recycling of tobacco waste in the tobacco processing industry. Since the production of the method follows the papermaking process and chemical extraction technology in some process links, it inevitably has the disadvantages of high water consumption and high waste water production. Its characteristics are that the waste water contains a large amount of fiber, and has the characteristics of high chroma, poor biodegradability, and nicotine that is unfavorable to microbial growth. It is a high-concentration and difficult-to-treat organic sewage. [0003] In the existing wastewater treatment technology, the traditional activated sludge method is generally used, and the residence time of the wastewater in the aeration ...

Claims

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Application Information

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IPC IPC(8): C02F9/06C02F11/12C10L5/46
CPCY02E50/30Y02E50/10
Inventor 唐向兵王凤兰吴志强姚元军胡丽军王亮刘志昌
Owner HUBEI CHINA TOBACCO IND
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